On Sat, Feb 15, 2020 at 02:58:24PM +0800, Chuanhong Guo wrote: > To keep patchset small for easier reviewing, there will be 3 patchsets > including this one. > 1. add the new driver, which is this patchset. > 2. update existing dts for the new driver: > spi-max-frequency is missing in current mtk-quadspi binding. Old > driver parses child node manually so it doesn't need this, but > new spi-mem driver is probed via spi subsystem which requires the > presence of spi-max-frequency. Since this doesn't break old driver > support, I'll send this separately as a standalone patch. This is an ABI break so you shouldn't be doing this, if the existing binding works it should continue to work. > 3. removing the old driver. I'll create this commit after 1 and 2 are > applied to avoid possible rebasing due to any changes in the old > driver. This isn't great as it means we have a period with two drivers for the same thing in tree which is at best going to be confusing. There's no advantage to splitting this out.
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